The WattCycle 2.5kW 10kWh All-in-One AC Coupled Battery Storage System adds battery storage to an existing rooftop or balcony solar setup. Instead of sending all surplus solar power directly to the grid, you can store more of it for evening and overnight household use.
Battery storage helps shift surplus solar energy from daytime to the hours when your home actually needs it. Instead of relying as heavily on grid electricity in the evening, stored solar power can support household consumption and improve overall solar self-consumption.
With 10kWh of battery capacity and 2.5kW rated output, the system helps capture surplus daytime solar energy and make it available when your home needs it later. This can reduce grid imports and help you use a greater share of the electricity generated by your own PV system.
The integrated 51.2V 200Ah LiFePO4 battery provides 10kWh of energy storage for repeated household cycling. Active balancing and intelligent battery management help maintain cell consistency and support reliable long-term energy storage.
In addition to solar energy storage, the system can supply connected critical loads during an unexpected grid outage. Fast UPS switching helps minimise disruption to supported household electronics and essential equipment.
With IP65 protection and a wide operating temperature range, the system is designed for flexible residential installation environments. Clear status lighting also provides an easy visual indication of charging, Wi-Fi connection, inverter operation and system faults.
Built-in Wi-Fi connects the system to the WattCycle Home App for convenient remote monitoring and control. Track energy status, manage supported settings and understand how solar generation, battery storage and grid power work together from your smartphone.
The AC-coupled architecture is intended for homeowners who already have a compatible rooftop or balcony solar system and want to add energy storage. Instead of replacing the existing PV hardware, the WattCycle system works as a storage layer alongside the current solar installation.
Automatically store excess solar energy when generation is high and use stored power later when household demand increases. Charging and discharging schedules can also be adjusted to better match solar production, household consumption and electricity tariff periods.
The system integrates battery storage, power electronics and smart energy control into one compact vertical enclosure. Measuring approximately 500 × 210 × 800mm, it reduces the space and complexity associated with installing multiple separate energy-storage components.
In a conventional PV system, solar panels and the microinverter send electricity directly to the home or grid. Adding WattCycle AC-coupled storage creates an additional energy layer, allowing surplus solar generation to be stored and used later rather than immediately exported.
During the day, compatible rooftop or balcony PV systems generate electricity through the existing microinverter. The AC-coupled storage system can capture available surplus energy, then return stored power later when solar generation falls or household demand rises.
The system package includes the main energy storage unit, smart metering components, Wi-Fi antenna, grid charging cable and installation hardware. Together, these components help integrate solar generation, household demand, battery storage and grid interaction into one coordinated energy system.
| Battery Technology | LiFePO4 |
| Total Energy | 10kWh |
| Rated Capacity | 200Ah |
| Rated Voltage | 51.2V |
| Dimensions (L × W × H) | 500 × 210 × 800 mm |
| Weight | 95 kg |
| Protection Rating | IP65 |
| Display | Touch Screen |
| Communication Protocol | PYLON 485 |
| Battery Cycle Life | ≥8000 Cycles @ 25℃, 70% EOL |
| Standby Self-Consumption | <300μA |
| Battery Internal Resistance | ≤13.9mΩ |
| Standard Discharge Capacity | ≥200Ah |
| Charging Method | Constant Current / Constant Voltage (CC/CV) |
| Charge Cut-off Voltage | 56–58.4V |
| Charge Stop Voltage | 56.8V |
| Discharge Stop Voltage | 44V |
| Input Current | Max. 100A |
| Output Current | Max. 100A |
| Discharge Current Protection | 100A / 300S |
| Cell Overcharge Voltage | 3.6V |
| Cell Overcharge Recovery Voltage | 3.55V |
| Cell Overdischarge Voltage | 2.6V |
| Cell Overdischarge Recovery Voltage | 2.65V |
| Pack Overcharge Voltage | 57.6V |
| Pack Overcharge Recovery Voltage | 56.8V |
| Pack Overdischarge Voltage | 41.6V |
| Pack Overdischarge Recovery Voltage | 42.4V |
| State of Charge (SoC) Range | 40%–60% |
| Balancing Method | Active Balancing |
| Battery Discharge Efficiency | 94% @ 48VDC |
| Charge Temperature Protection | High: 70℃ (Recovery 60℃) Low: -20℃ (Recovery -10℃) |
| Discharge Temperature Protection | High: 70℃ (Recovery 60℃) Low: -35℃ (Recovery -30℃) |
| Short-Circuit Protection | Recovery via "Remove Load" and "Charge/Discharge Removal" |
| Rated Load | 2.5kW |
| Surge Power | 5kVA |
| Input Voltage Range | 170–280Vac, L+N+PE |
| Input Frequency | 48–51Hz |
| Output Voltage | 208 / 220 / 230 / 240Vac |
| Output Frequency | 50/60Hz ±0.1 |
| Input Power Factor | ≥0.95 PFC |
| Output Waveform | Pure Sine Wave |
| Switching Time | <10ms (UPS Mode, Auto-switch During Grid Failure) |
| Overload Capacity (Battery Mode) | 5 min @ 105%–120% Rated Load; 10 s @ 120%–150% Rated Load |
| Max. AC Charging Current | 50A |
| Grid-Tie Power | 0–2500W |
| APP Function | Grid-tie Time & Power Management and Control |
| Insulation Withstand Voltage | 42V DC Between Battery and AC Side, Leakage Current <1mA |
| Energy Saving Mode | <13W (Sleep, No Output); <30W (No-load Output) |
| Operating Temperature | -10℃ to 55℃ (14℉ to 131℉) |
| Operating Humidity | 0–98% |
Ho acquistato la batteria solare a rack 48v e l'ho collegata alla power station Ecoflow delta 3 da 1 KW con il cavo arrivato in omaggio da wattcyle, ringrazio infinitamente Wattcycle, il tutto inserito nel mio camper come da foto. Soluzione eccezionale, ora ho una autonomia eccezionale ed un funzionamento veramente integrato ad un prezzo complessivo molto basso, La power Station Ecoflow riceve la carica da un pannello solare sopra il camper, 370W a pieno sole, che cosi carica il tutto.. L'installazione è stata valutata con attenzione per inserirla e fissarla in sicurezza, ammortizzata senza urti nel camper.
Works perfectly! Even better than expected😃
I am definitely going to order another one soon.
Très bon fonctionnement
Thank you for the new modern charging station. It is made with high quality. I bought it exclusively as an energy storage device for my own consumption, but the ability to receive and give electricity to an external power grid requires professional attention.
Fungerar perfekt.
It works perfectly. Very essy to connect and start it.
Excellent. It provides a superior alternative to conventional work batteries.
Super batterie et livraison rapide
A készülék tökéletesen működik. Masszív kivitelezés. Egy negatívum. A futár nem tudta háznál lerakni, mert nagy a tömege. Ezért nekem kellett menni a depoba átvenni, és utánfutóval hazavinni a csomagot.
All ok
Awesome buy
Too mean with the cables which is one of the reasons I no longer buy Bluetti products
These are awesome and looking at getting 2 more of these
Ho acquistato la batteria solare a rack 48v e l'ho collegata alla power station Ecoflow delta 3 da 1 KW con il cavo arrivato in omaggio da wattcyle, ringrazio infinitamente Wattcycle, il tutto inserito nel mio camper come da foto. Soluzione eccezionale, ora ho una autonomia eccezionale ed un funzionamento veramente integrato ad un prezzo complessivo molto basso, La power Station Ecoflow riceve la carica da un pannello solare sopra il camper, 370W a pieno sole, che cosi carica il tutto.. L'installazione è stata valutata con attenzione per inserirla e fissarla in sicurezza, ammortizzata senza urti nel camper.
Very😊
Main delivery was fast..🤗. Cables 2pcs still coming. More information about delivery time schedules and contents needs.
It was quite amazing to see batteries on my parking site when no information arriving to country not exist. But all is quite okay. 8/10 now without cables delivery.
Doet wat het moet doen prima accu
Dělá přesně to co má......super balancování 👍
I’ ll buy again when you have offers or it’s Black Friday because it’s a very good battery.Thank’s!!!
good
Perfekte Qualit?t und hohe Kapazit?t (5120 Wh, die tats?chlich komplett nutzbar sind).
Ich teste die Batterie seit etwa einer Woche und kann bereits sagen, dass ich sehr zufrieden bin. Sie arbeitet absolut ger?uschlos und wurde in einer sehr stabilen, gut gepolsterten Verpackung geliefert.
Die Batterie verh?lt sich genau nach Handbuch �C selbst bei hoher Last (1,5/2 kW Spitze) zeigt sie keine unerwarteten Spannungseinbr��che (wie es sich f��r eine gute LiFePO4-Batterie geh?rt).
Die 5 kWh Kapazit?t wirken absolut realistisch. Jetzt, wo die W?rmepumpe nachts kaum l?uft, komme ich problemlos bis zum Morgen.
Zuvor hatte ich 16 AGM-Batterien... das ist ��berhaupt kein Vergleich.
Ausgezeichnetes Produkt, sehr zu empfehlen!
Meine Solar-Firma hat f��r einen Gewerbekunden 8 Einheiten installiert. Die 100% Entladetiefe und die Lebensdauer von 6000 Zyklen haben die Konkurrenz deklassiert. Die Lastspitzenentgelte des Kunden sind um 65 % gesunken! Die Installation war werkzeugfrei �C die Module passten einfach in Standard-Racks. Der Kundendienst hat sogar remote dabei geholfen, die BMS-Einstellungen anzupassen. Absolut empfehlenswert f��r gewerbliche Anwendungen.
Der Akku hat alles, was unbedingt n?tig ist, und das in guter Qualit?t. Der Speicher arbeitet sehr gut. Diesen Akku werde ich auf jeden Fall bei der Planung meiner Solaranlage ber��cksichtigen.
Die 5 Jahre Garantie und die LiFePO4 zellen haben mich ��berzeugt. Die Energiedichte ist enorm. Sie ersetzte meine alten Bleibatterien bei nur einem Drittel des Platzbedarfs. Laufzeit: 14 Stunden bei 800 Watt Volllast. Ein absolut lohnenswerter Kauf.
Sehr guter Verk?ufer mit hochwertigen Produkten. Ich werde wieder Batterien hier kaufen. Vielen Dank!
Habe es sofort in Betrieb genommen und es funktioniert einwandfrei. Mal sehen, wie es sich auf lange Sicht schl?gt.Ich halte Sie auf dem Laufenden.
Ich habe das Akku mal ausf��hrlich getestet und duchgemessen. Verarbeitung ist wirklich sehr sauber. Zellen sind neu und Innenwiderst?nde gut. Kurzschlusstest hat BMS sehr gut verkraftet, sofort abgeschaltet.
Habe vor 3 Tagen zwei dieser 48V Powerwall Batterien mit meiner 8kW Solaranlage installiert. Die 100Ah Kapazit?t ist perfekt. Versorgt meine komplette Werkstatt ��ber Nacht und hat immer noch 40% ��brig. Die ��berwachung ist super pr?zise, und das modulare Design machte die Erweiterung kinderleicht. Keine Spannungseinbr��che selbst bei Spitzenlast. Jeder Cent wert!
